in CR or PR according to IWG criteria (see appendix 3) after one or two courses of predefined intensive chemotherapy (see page 12) with available cytogenetics at evaluation of response Aged 18 years of age or more Written Informed consent Adequate Contraception, if relevant Negative pregnancy test if relevant. Patients not eligible for the azacitidine confirmatory trial (azacitidine " versus " conventional treatment ") or unwilling to participate to it